# Slime VR vs Planetarium VR

The clearest difference is in-app purchases: Slime VR at none against Planetarium VR's 1. Slime VR also leads on review sentiment (75% vs 41%) and device support (4 vs 2). Planetarium VR's advantage is ads (none vs shown) and rating (3.0 vs 2.8). On price, ratings volume and update cadence there is nothing between them.

Both are free to download. Planetarium VR sells 1 one-off in-app purchase. Slime VR asks for nothing beyond the download.

Planetarium VR holds the better App Store score, 3.0 against 2.8. Both are backed by a comparable volume of ratings — 8 and 5 respectively. Written reviews complicate that: 75% of Slime VR's written reviews are positive against 41% of Planetarium VR's, so the app with the better star average is not the one people write more warmly about.

Slime VR ships an update every 4 months, Planetarium VR every 6 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Slime VR | Planetarium VR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (8 ratings)](https://appshunter.io/ios/app/slime-vr/id1017898376/reviews) | **[3.0 (5 ratings)](https://appshunter.io/ios/app/planetarium-vr/id1154347281/reviews)** |
| Number of ratings | **8** | 5 |
| Positive reviews | **75.0% of reviews** | 41.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 47 MB | 141 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KENSHI DOI](https://appshunter.io/developer/709264908) | [Taosoftware Inc.](https://appshunter.io/developer/558446291) |

## What reviewers say

### Slime VR

[App page](https://appshunter.io/ios/app/slime-vr/id1017898376)

Experience bouncy slimes in a virtual reality environment. Rotate your device to view them, or use a VR box for an immersive 3D experience. Capture photos with slimes and even have them follow detected faces.

**Highlights:** 3D VR viewing, Face detection for slime interaction, Photo capture with slimes, Texture selection for slimes and fields, Multi-device view synchronization, iCloud save/load integration

**In-app purchases:** none


### Planetarium VR

[App page](https://appshunter.io/ios/app/planetarium-vr/id1154347281)

Explore the night sky with this virtual planetarium. Using your device's GPS and sensors, you can identify constellations and over 3000 stars. It supports VR Cardboard for an immersive experience and offers options for viewing the sky in different scenarios.

**Highlights:** View over 3000 stars, Identify 88 constellations, Uses GPS and advanced sensors, Cardboard VR support, Simulates diurnal motion, Adjustable viewing locations

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Solar system planets | $1.99 | one-time |


## Frequently asked questions

### Is Slime VR free?

Slime VR is free to download, with no in-app purchases.

### Is Planetarium VR free?

Planetarium VR is free to download, with in-app purchases available.

### Which has better reviews, Slime VR or Planetarium VR?

Planetarium VR is rated higher. Slime VR averages 2.8 out of 5 from 8 ratings, while Planetarium VR averages 3.0 from 5 ratings.

### Do Slime VR or Planetarium VR have ads?

Slime VR shows ads; Planetarium VR does not.

### Which is updated more often, Slime VR or Planetarium VR?

Slime VR ships an update every 4 months, and Planetarium VR every 6 months. Most recently, Slime VR was updated on October 24, 2026 and Planetarium VR on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*